department under presidents, both george w. bush and bill clinton. why do you make these assertions coming back from iran? did you have high-level meetings in which you were privy to information our state department is not privy to? >> well, we met with a range of people. we met with people from the government but students at the university. we were actually invited by the university of tehran. we met with students, professors. we met with a range of people in iran, and what we come back with is a sense that walking in the streets of tehran, going to the university, going into the marketplace, this is not a country that is on the brink of implosion, that sanctions are somehow going to cripple and force it to concede to american or any other demands. and this is something that when we did the research for our book, we found historically, we have seen american so-called iran experts predict literally since the founding of the republic of iran back in 1979, that this political order is on the brink of implosion or regime change. this is something coming back from our most recent trip to iran.